10 DPO, opinions??

I am currently 10 dpo, been experiencing slight cramps, sharp indigestion pains (a lot of gas) which I never ever get at all & haven't been eating anything out of the ordinary, sore nipples to touch (if not touched they aren't sore). When checking my cervics the last few days the cm was clear, watery & slippery which I assumed was normal for being 8/9 dpo & thought I was out for this month of trying. Then this morning & all of today, when I have been wiping it has been full discharge with quite a yellow hint of colour. Also been getting quite a few headaches. Any opinions?